Updates the Math submodule to ab4849d.

stan-buildbot · stan-buildbot · commit bb8985c49bb4 · 2025-08-21T08:57:52.000-04:00
diff --git a/lib/stan_math b/lib/stan_math
@@ -1 +1 @@
-Subproject commit f98e093ff0ca29d50e25f96815ecf18610bd64f1
+Subproject commit ab4849d0493bf4dfd13c80bb99cd9392c1523cc8
